The resistance of a galvanometer coil is 25ohms and the current required for full scale deflection is 500μA.
a) explain how to convert the galvanometer to an ammeter reading 20mA full scale, and compute the shunt resistance
b) explain how to convert the galvanometer to a voltmeter reading 500mV full scale, compute the series resistance
The Attempt at a Solution
does Ifs=0.02 or 0.0005A
0.0005A * 25ohms = ( 0.02A- 0.0005A) Rsh ??